Home / 209,901.28-314,847.60-69,661.12

Finding the Fourth Proportional to 209,901.28, 314,847.60 and 69,661.12

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Solution

The fourth proportional to 209,901.28, 314,847.60 and 69,661.12 is: 104,490.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,901.28 : 314,847.60 = 69,661.12 : x
  2. Step 2: Convert to fraction form
    209,901.28/314,847.60 = 69,661.12/x
  3. Step 3: Cross multiply
    209,901.28x = 314,847.60 × 69,661.12
  4. Step 4: Simplify right side
    209,901.28x = 21,932,636,445.31
  5. Step 5: Solve for x
    x = 21,932,636,445.31/209,901.28
  6. Step 6: Final answer
    x = 104,490.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.